what are the freshwater baitfish?

That would depend on what lives in your lake. It could be mosquito fish or they could be fry of something else. In Florida, options are pretty expansive. Get a photo.

the possibilities are endless in florida. theres so many fish that are not only native, but invasive and introduced, that it would make it virtually impossible to know without a pic.

just think of how many big cichlids alone have established themselves in floridas waters from being released from aquariums. nevermind tiny fish that every tom, dick and harry could have had in a tiny fish bowl and let loose.

Florida is overrun with Mosquitofish, though. I remember going to a drainage ditch and seeing some Cichlids...so I decided to toss some bread in to see if theyw ould come to the top...instaed, I got a mass exodus of Mosquitofish, including the mottled variety. It was literally thousands of them...it looked like a biblical plague lol

if it is down in south fla, most likely gambusia and some random small killies

only one way to know for sure... post a picture